An event that occurs when a legal adultmale views a girl from afar who appears to be very attractive due to clothing choice or physical development, but upon closer inspection discovers that she is clearly underage.
John was driving past the local park, where he saw a girl in a short skirt who looked rather attractive. Seconds later, he saw her from a closer distance and realized she was 13, blaming this event on "Jailbait Mirage."
The Mirage Effect occurs when you see a female with a Phat ass and the ass alone makes you think that the female is attractive but she is actually not.
Damon: Wow that girl has a phat ass and is hot too!
Matthew: Dude, she isn't even hot, it's just the Mirage Effect taking place.